These stainless steel dipping baskets are made of perforated type 304 stainless steel. Their 12" x 12" size fits nicely into a 12" x 12" dryer. They work well in degreaser where plastic will not. They are very sturdy, with high corrosion resistance, and withstand very high temperatures. Each basket has a rolled top, bottom support, and sturdy handle. Two size perforations are available. They are very reasonably priced, especially for this quality. 18 gauge.